SIMATIC S7-1200 SM 1221, DI 16×24 VDC PLC expansion module
$236.85 – $263.17
SM 1221 — digital input expansion module, 16x24VDC.
Technical Specifications
| Module Type | Digital Input |
| Channels | 16x 24V DC |
Typical Applications
Used to expand digital input capacity on an S7-1200 CPU for additional sensor or switch connections.










